import turtle,math
from UsefulTurtleFunctions import *

turtle.hideturtle()

drawLine(-200,0,200,0)
drawLine(190,10,200,0)
drawLine(200,0,190,-10)


drawLine(0,-70,0,70)
drawLine(-10,60,0,70)
drawLine(0,70,10,60)

writeText("-2\u03c0",-100,-15)
writeText("-2\u03c0",100,-15)



turtle.penup()
turtle.goto(-175,50)
turtle.pendown()
turtle.color("blue")
for x in range(-175,176):
    y = 50*math.sin( ( x/100 ) * 2 * math.pi)
    turtle.goto(x,y)

turtle.penup()
turtle.goto(-175,0)
turtle.pendown()
turtle.color("red")
for x in range(-175,176):
    y = 50*math.cos( ( x/100 ) * 2 * math.pi)
    turtle.goto(x,y)

turtle.done()